n, A person whose actions are motivated out of necessity rather than a moral code based around being perceived as nice or good.

antonym: dreamer

Movie: Flight of the Phoenix (2004)
Stuck in the desert with dwindling water supplies, Elliott (the bastard) executes an injered enemy against the wishes of the other suvivors, as he would die eventually anyway and they would have no chance of surviving were they to share water with him.

• child without married parents
• One who is narcissistic and unknowingly frustrating
• The killer of kenny• A 70's band which changed thier name to Motörhead and became one of the best bands ever.

Your parents aren't married, hence you are a bastard. You covered dog shit with a leaf and left it outside your brothers' front door because you thought it was funny, you bastard. You killed kenny, you bastard.